Does IP Subnetting boggle your mind? Would you like a “cheat sheet” to have around?
If so, we have got some great subnetting charts for you!
In chart #1, we take a network from each of the three classes (A, B, and C) and calculate the number of hosts and networks for every possible subnet mask. Here it is:
HappyRouter.com – IP Subnet Breakdown #1
In chart #2, we calculate every possible subnetting variation for a class B and C network. Take a look:
HappyRouter.com – IP Subnet Breakdown #2
For lack of a fancy IP subnetting calculator, these are great subnetting references to have around.
Enjoy!
This information sponsored by TrainSignal. Checkout their Cisco Router Training!
David Davis (CCIE #9369, VCP, CISSP, MCSE) has been in the IT industry for 15+ years. He has authored over 300 articles, 6 video training courses, and co-authored one book. Learn about David's certifications, video courses, and where you can find his content on our 
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